Discussion on impeachment has intensified since Donald Trump assumed office this January, but what do we know about impeachment’s constitutional design and history? Cass Sunstein, professor at Harvard Law School, recently wrote an accessible account of impeachment to separate myth from history. Last week, Benjamin Wittes interviewed Sunstein on his new book "Impeachment: A Citizen's Guide." They discussed the Framers’ intent behind impeachment, what “high crimes and misdemeanors” actually means, the appropriate situations for which impeachment is called, and much more.